Carline and method of manufacture.



PATBNTED NOV. 20, 1906.

E. I. DODDS.

GARLINE AND METHOD OF MANUFACTURE.

APPLICATION FILED MAYB, 1905.

flmaea I (5%; s 671% g Ja e/1W2;

, for the purlins and ridge-pole.

'preferaby depressed at s'rarns UNITE i ETHAN l. DODDS, OF PUL'LMAN,COMPANY, OF CHICAGO,

LLMAN CARLlNE AND METl-EQD 0F Specification of Letters Patent.

Patented Kiev. 20, 1996.

Application lllerl'lfiay 8, 1905. Serial No 259.378.

T0 00% whom it may concern.-

Be it known that I, ETHAN l. Dorms, a citizen of the United States,residing at Pullman, in the county of (look and State of 1lli-, nois,have invented certain new and usefu Improvements in Carlines and theMethods of Manufacture, of which the following is a specification.

My invention relates to carlines for railway-cars and methods ofmanufacturing them, and'pertains more particularly to th at class ofcarlines which are made of pressed steel.

One object of my invention is to provide an improved car-line combininga maximum of strength and rigidity with a minimum of weight andsimplicity of manufacture.

A carline constructed in accordance with my invention is illustrated inthe accompanying drawings, wherein' Figure 1 is a side elevational viewof my improved carline. Fig. 2 is a top plan view. Fig. 3 is across-sectional view, on an en larged scale, entire line 3 3 of Fig. 2;and Fig. 4 is a similar cross-sectional View of a modification, omittingthe countersunk seats In constructing my improved carline I take a plainflat rectangular strip of plate steel and press one longitudinal halfthereof outwardly from the plane of the strip until the same assumes thelow roof-shaped formation illustrated in Fig. 1, thereby producing theoppositely-sloping upper surfaces 5 and the central vertical web 6. Thisoperation, when performed by means of a suitable die, results in.drawing inwardly themetal of the opposite longitudinal half, therebyproducing horizontal flanges 7 on the lower margin of the vertical web6, which flanges start-from substantially the center of the lower marginof said web and gradually increase in width to the ends of the carline.The pressing operation is also preferably so performed as to cause theoutwardly-displaced longitudinal half of the strip to contribute aslight portion of its metal to the formation of the vertical web 6,whereby the inclined upper surfaces 5 are slightly narrower at thecenter than at the ends, tapering slightly on their free edges, as shownin Fig. 2. The upper surfaces 5 are intervals to form seats 8 for thepurlins and a central seat 9 for the ridge-pole, said seats beingapertured', as

shown at l0, for the passage of bolts uniting 5 5 the carline andpurlins. However, the seats 8 and 9, either or both, may be omitted, asshown in Fig. i, desired. in the ends of the purlin are formed the usualholes ll, whereby it may be secured to the pl l claim--- l. A carlinehaving oppositely inclined purlin-supporting surfaces, 9. vertical Web,and flangeson the lr-v e margin of the latter, the parts being-so l thesum 6 of the mdth orths r iii-supper s1. i e, the depth of the verticalweb, and b width of the lower is substantia ly the same at all points inthe length of the or i. .e, sub st anti ally as'described.

'c-positely inclined 52. l carline harm; o, purlin--supporting s1slightly increasin in'width from the center to the ends the carline, avertical lower margin of the latter, the, p being so 7 5 pro )ortionedthat the sum of the width of the purlinsuppcrting surface, the depth ofthevertical web, and the width of the lower flange is substantially thesame at all points in the length of the carline, substantially asdescribed.

A carline having oppositely-inclined purlin-supporting SIl'L'fQCES,Ztvertical web, and flanges on the lower margin of the latter increasingin width from the center to the 8 5 ends of the carline, the parts beingso proportioned that the sum of the width of the purlinsupportingsurface, the depth of the vertical web, and the width of the lowerflange is substantially the same at all points in the length 0 of thecarline, substantially as described.

4. A carline having oppositely -inclined nurlin-supporting surfacesslightly increasing I in width from the center to the ends of thecarline, a vertical 'web, and flanges on the lowerinargin of the latterincreasing inwidth from the center to the ends of the carline, the partsbeing so proportioned that the sum of the width of the purlin-supportingsurface, the depth of the vertical web, and the width of the lowerflange is substantially the same at all points in the length of thecarline, substantially described.

5. A carline made from a single strip of sheet metal pressed into formto sit-ely-inclined upper surfaces of slightly-in creasing width. fromthe center to the ends of the carline and provided with countersunkpresentoppo- 1 5 tially the seine at all urlin-suppor'ting seats, avertical Web, and orilzontal flanges. of increasing Width from 'thecenter to the ends of the car'lin'e on the lower margin of sezid Web,the parts proportioned that the sum of the Width of the upper surface,the depth of the veitieal Web, and the width of the, lower flangeissubstanpoints in the length of the csrline, substantially as described.

6. The method of-menufact'uring e carline which consists in pressing arectangular metal sheet to form oppositelydnclined. purlinsupportingsurfaces, a vertical Web, and oneor more horizontal flanges on the lowermargin ofthe letter, substantially as described.

7. The method of manufacturing e czirline which consists in pressing arectangular met sl sheet to form oppositely-inclined purlin siipportingsurfaces of slightly-mereasing width being soasses/o I frc m center tothe ends, a; v crticel Web,

and one or more horizontal flan es of increasing width from he center tot ie'end sf the lower margin of said Web, substantially as t described.

faces of slightly-increasing Width from the eenterto the ends andprovidedwith countersunk purlin-supportin seats, a Vertical Web, and oneor more suestentially horizontal flanges of increasing Width from thecenter to the end of the lower margin of said Web, substantially asdescribed.

ETHAN I. DODDSH Witnesses SAMUEL N. POND, FREDERICK C. Goomvm.

